i dynamatted a bunch of stuff on my car and it sounds really good. but now when i chill with no music on and hit a bump the back rattles alot and i cant figure out what it is. then i feel like people think my cars falling apart when they ride with me and hear it rattling. is there anyway to stop this.

 

Did you dynamatt the hatch? (Like the hatch door itself, not where the spare sits.) A lot of rattle comes from there.

 

yes

 

Try this...

https://www.scionlife.com/forums/vie...290&highlight=

I did that and it helped out a lot. Now I have a rattle coming from the sunroof.